""The Eruptive Rocks of Electric Peak and Sepulchre Mountain, Yellowstone National Park"" is a comprehensive geological study conducted by Joseph Paxson Iddings in 1892. The book provides a detailed analysis of the volcanic rocks found in the Electric Peak and Sepulchre Mountain regions of Yellowstone National Park. It includes a thorough examination of the mineral composition, physical properties, and geological history of the rocks. Iddings also...